Flicker Meter+ Light

LED PWM Flicker Detector

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Detect invisible LED flicker with your camera. Measure PWM frequency, flicker percentage, and visualize light modulation in real time. Flicker Meter+ Light measures the invisible flicker of LED lights, screens, and other light sources using your iPhone camera. Detect harmful PWM flicker that can cause eye strain, headaches, and discomfort. Simply point your camera at any light source and get an instant reading of the flicker frequency in Hz and the flicker percentage. The app visualizes the light modulation waveform in real time so you can see exactly how your lights behave. Perfect for evaluating LED bulbs before purchase, checking office lighting quality, or diagnosing display refresh issues. Compare different light sources and find the ones that are safest for your eyes. Designed for lighting professionals, health-conscious users, and anyone who wants to understand the hidden behavior of their lights. Clean interface with accurate, real-time measurements.

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- Expanded ad attribution (SKAdNetwork) coverage for better measurement - Performance and stability improvements

Version 1.0.10

The developer, Kyu-Hee Jang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Kyu-Hee Jang
Size
  • 34.1 MB
Category
  • Utilities
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
18+
Copyright
  • © Copyright 2026 Simon Jang. All rights reserved.
  • Developer Website
  • Privacy Policy

    • More by Kyu-Hee Jang